© Semiconductor Components Industries, LLC, 2014

July, 2014 − Rev. 10

1

Publication Order Number:

MC14543B/D

MC14543B

BCD-to-Seven Segment

Latch/Decoder/Driver for

Liquid Crystals

The MC14543B BCD−to−seven segment latch/decoder/driver is

designed for use with liquid crystal readouts, and is constructed with

complementary MOS (CMOS) enhancement mode devices.

The circuit provides the functions of a 4−bit storage latch and an 8421

BCD−to−seven segment decoder and driver. The device has the

capability to invert the logic levels of the output combination.

The phase (Ph), blanking (BI), and latch disable (LD) inputs are used

to reverse the truth table phase, blank the display, and store a BCD

code, respectively. For liquid crystal (LC) readouts, a square wave is

applied to the Ph input of the circuit and the electrically common

backplane of the display. The outputs of the circuit are connected

directly to the segments of the LC readout. For other types of readouts,

such as light−emitting diode (LED), incandescent, gas discharge, and

fluorescent readouts, connection diagrams are given on this data sheet.

Applications include instrument (e.g., counter, DVM etc.) display

driver, computer/calculator display driver, cockpit display driver, and

various clock, watch, and timer uses.

Features

TTL Load or 2 HTL Loads Over the Rated Temperature Range

Unique Site and Control Change Requirements; AEC−Q100

Qualified and PPAP Capable.

http://onsemi.com

See detailed ordering and shipping information in the package

dimensions section on page 7 of this data sheet.

ORDERING INFORMATION

A

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W = Work Week

G

= Pb−Free Package

MARKING DIAGRAM

SOIC−16

D SUFFIX

CASE 751B

1

16

14543BG

AWLYWW

1

PIN ASSIGNMENT

13

14

15

16

9

10

11

12

5

4

3

2

1

8

7

6

d

e

g

f

a

b

c

D

B

C

LD

BI

PH

A